title: Solution to quality assurance challenge 11.
authors.affiliation: Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Lessingstraße 8, 07734, Jena, Germany.
authors.forename: Manfred
authors.initials: M
authors.lastname: Reichenbächer
authors.forename: Jürgen W
authors.initials: JW
authors.lastname: Einax